/*
 *   Copyright 2012, Thomas Kerber
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package milk.skimmed;

/**
 * A interface to be implemented by any applications utilising skimmed milk
 * as a means for skimmed milk to communicate with the user.
 * 
 * Must be added with Callback.addCallback(). Several CallbackInterfaces may
 * be added.
 * @author Thomas Kerber
 * @version 1.0.0
 */
public interface CallbackInterface{
    
    /**
     * Issues an error.
     * @param error The error message.
     */
    public void issueError(String error);
    
    /**
     * Issues a warning.
     * @param warning The warning message.
     */
    public void issueWarning(String warning);
    
    /**
     * Notifies the user about something.
     * @param notice The notification message.
     */
    public void notifyUser(String notice);
    
}
